William foeeest



(No Model.)

W. FORREST,

EDUGATIONAL lNgTRUMENT- No. 305,585. Patented Sept. 23, 18 84.

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ATENT WILLIAM FORREST, or BRADFORD, ONTARIO, CANADA.

EDUCATIONAL INSTRUMENT.

SPECIFICATION forming part of Letters Patent No. 305,585, dated September 23, 1884. Application filed August 22, 1883. (No modehi Patented in Canada September 10, 1883, No. 17,613.

To all whom it may concern:

Be it known that 1, WILLIAM FORREST, of

the village of Bradford, in the countyof Sim-.

ace, in the Province of OntarioyCanada, have invented a certain new and useful Educational Instrument and I do hereby declare that the following is a full,clear, and exact description of the same.

The object of the invention is to produce an educational instrument to assist a teacher in giving instruction in spelling and reading; andit consists in the peculiar combinations and the construction and arrangement of parts hereinafter more fully described and claimed.

Figure 1 is a perspective view of my educational instrument, in which the disks or rings are contained within a casing having a longitudinal slot, so as to expose one letter on the periphery of each disk, the said disks being operated by dogs adjustably fitted to a spindle upon which the casing is held. Fig. 2 is a perspective view of one of the disks placed on the spindle immediately over the dogs used for operating it. Fig. 31's aview showing the disk contained within a similar casing, but

1 each disk being provided with an independent handle for turning it upon its pivot.

In the drawings, like letters of reference in dicate' corresponding parts in each figure; but as the construction exhibited in Figs. 1 and 2 is somewhat different from the construction shown in Fig. 3, I shall proceed to explain each figure by itself.

In Fig. 1, A is a casing arranged to contain the disks'B,which disks are journaled on the cylinder 0 which is fixed to the bearing-plates I). The ends of the casing A have lips formed on them so as to project into the groove E, made in the cylinder 0, so that the said casing will not revolve, but yet may be adjusted longitudinally upon the cylinder 0 to bring the desired disk over the collar G, which will be hereinafter described.

In Fig. 2, which is a detail of a portion of Fig. 1, the spindle F, which passes through the cylinder 0, is shown. This spindle F has fixed to it the collar G, which is located at a point in the longitudinal length of the spindle, as indicated by the pointer H. (Shown in Fig. 1.) I are arms pivoted at i, and having fixed to one end of them the dogs J, which fit into slots made in the collar G. By pressing together the outer ends of the arms I the dogs J will be caused to expand, so as to press against and grip the disk B, which, as shown in Fig. 2, is located immediately over it. The disk B when so grasped may be turned around, and as the casing A is longitudinally adj ustable upon the cylinder 0,- any one disk con tained within the casing may be brought over the collar and thus acted upon, the pointer H which each disk may be turned on its common center without reference to the other disks. I11 order'to enable each disk to be revolved without imparting motion to the others, I place between each'two disks a washer, L, (see Fig. 1,) which I fix so that it will not revolve, consequently each disk has a dead stationary surface to revolve against. These washers may be connected to the casing A or held together in any other way, so that they will not revolve with the disks.

In Fig. 3, I show a slate or other marking surface, M, located above the letters exhibited in the space or longitudinal opening extending across the peripheries of the disks. This slate is intended for the purpose of taking diaoritical marks which the teacher may wish toapply to any particular letter, and which diacritical mark may be easily erased when it has performed its particular function. I also show in this figure a slide or blind, N, which is so arranged that it may be adjusted in order to cover the letters in the space either independently or collectivelythat is to say, if the teacher wishes to teach a pupil a word of two syllables-for instance, landlordhe would adjust the slide N so as to cover the letters in the second syllable, and when the pupil has grasped the first syllable, L, A, N, D, theslide canthen be moved so as to expose the second syllable, L, O,R, D, or each letter maybe separately exposed. In

the drawings I have shown the slate and slide in Fig. 3 only, owing to the smallness of Fig.

the letters or other marks, when brought be fore the opening, shall be read together, sublybut it is obvious that they could also be atstantially as and for the purpose specified. tached to the casing shown in Fig. 1. If de- 2. In combination with asuitable frame and sired, two slides might also be used, the prina cylinder carried therein, a series of disks,

ciple of the slide being simply intended to eneach having a hole in its center to fit loosely able the teacher to exposethe letters in the onto said cylinder and centrally divided by a space, or rather to expose the letters between collar fixed to a spindle fitted within said cylthe lines forming the space, either independ inder, and dogs adj ustably fitted to the spinro ently or collectively. dle and actuated by mechanism whereby they In Fig. 8, I also show a plan for indicating can be thrown out beyond the periphery of on the outside of the casing the particular letthe collar for the purpose of gripping the parter that will be exposed in the space when the ticular disk which may at the time be over the handle attached to the particular disk or ring said collar, in order that the said disk will re- 15 is brought opposite to a letter on the end of volve when the spindle is turned on itsaxis.

p the casing. For instance, it will be noticed 3. A cylinder and a casing and a series of that on the disk on the left-hand side of the disks journaled on said cylinder and contained casing in Fig. 3, the letter A is exposed within said casing, which is so fixed to the cylbetween the lines forming the space. It will inder that it Willnot revolve thereon, butcon- 2o also'be seen that the handle K, which is fixed structed to move longitudinally on said cylinto it is opposite to the letter A, on the end der, the said casing having alongitudinal openof the casing, and so on. Each handle or knob ing made in it to expose "one letter on each disk, K should be provided with a pointer extendthe said disks being arranged to be revolved ing out to the fixed letters. within the casing independently of one an 25 When it is desired, then, to bring any parother, whereby the letters on the disks may be ticular letter opposite to the space, the knob brought separately before the opening for the on the particular disk it is desired to move is purpose of building up a word, substantially seized and the pointer attached to its knob as and for the purpose specified. brought opposite to the letter on the end of 4. Aseries of disksindependently j'ournaled 30 the casing A. In thismanner the different on the cylinder G, within the casing A, har letters may be brought opposite to the opening alongitudinal opening made in it, as speciing without the necessity of watching until fied, and means within the cylinder for longithe particular letter comes opposite to the tudinally adjusting the casing on the cylinder, opening. as described, whereby, by longitudinally ad- 3 5 Although I have described my educational justing the casing, the said. mechanism can be instrument merely for the purpose of manipucaused to grip any disk desired, in "combinalating the letters of the alphabet in order totion with a fixed pointer situated to indicate 1; build up different words, it will of course he the location of the gripping mechanism, subunderstood that instead of the letters the nustantially as and for the purpose specified. 4o merals or other signs might be printed upon 5. A series of disks pivoted on a common 5 the disks B, and manipulated in the same mancenter and having letters or other signs marked ner. I therefore do not confine myself to any on their periphery, and means for independparticular letters, nor do I confine myself to ently revolving each disk to bring a single letany particular form for the construction of my ter on one disk in conjunction with single let- 5 educational instrument, except as indicated 'ters on the other disks, the said letters so an in the claims; but ranged being between two parallel lines ex- VVhat I do claim as my invention, anddetending across the disk, in combination with sire to secure by Letters Patent, is a slate or other marking-surface located above 1. A series of disks pivoted independently, the letter so arranged for the purpose of tak- 50 but on a common center, and having printed ing diacritical marks.

or otherwise marked on them the letters of the Toronto, August 15, 1883. A alphabet, numerals,or other signs, in combi- \VM. FORREST. nation with a covering adjustable lengthwise In presence ofon said center and having an opening arranged CHAS. C. BALDWIN, a 55 to expose but one letter on each disk, whereby Lnwrs TOMLINSON. l l l l l l l a. a 

